I'll be honest I believe its the springs because I looked at the whole assemblies side by side and there was not a 3in difference. I would use your wagon springs. I couldn't because I had mine cut when I was into the lowrider thing a few years back. I'm planning to use some agxs with the regular 2wd springs as soon as winter is over and drop a zc into the wagon with a little boost. I saw a 4wd with a z6 and 5lbs of boost http://yota1man.tripod.com/vtecwagon/ if his holds up then I will try it. Unlike most of the civic loving population I love my wagon its our 5th one.